Explanation

(a) (i) Strong acid can ionize completely E.g. HCI\(_{(aq)}\) —> H\(^{+}_{(aq)}\) + CI\(^-_{(aq)}\) Concentrated acid means great amount of the acidic compound dissolved in little amount of water.

(ii) Amphoteric oxide is a metallic oxide which is both acidic and basic. E.g Al\(_2\)O\(_3\) + 6HCl —> 2AICl\(_3\) + 3H\(_2\)O\(_{(l)}\)

Al\(_2\)O\(_{3(5)}\) + 2NaO\(_{(aq)}\) + 3H\(_2\)O\(_1\) ---> 2NaAl(OH)\(_{4(aq)}\)

(b)(i) The manufacture of H\(_2\)SO\(_4\) by contact process sulphur(VI) oxide, the anhydride of H\(_2\)SO\(_4\) can be obtained by contact process which entails

SO\(_{2(g)}\) + O\(_{2(g)}\)  SO\(_{3(g)}\)

The sulphur(VI) To dissolved in concentrated H\(_2\)SO\(_4\) to form, a fuming liquid called oleurn (H\(_2\)S\(_2\)O\(_{7(aq)}\))

H\(_2\)SO\(_{4(aq)}\) + SO\(_{3(g)}\) \(\to\) (H\(_2\)S\(_2\)O\(_{7(aq)}\)

The oleum is carefully diluted with correct amount of water to .give ordinary concentrated

H\(_2\)SO\(_{4}\).H\(_2\)S\(_2\)O\(_{7(aq)}\) + H\(_2\)O\(_{(l)}\) --> 2H\(_2\)SO\(_{4(aq)}\)

(ii) H\(_2\)SO\(_4\) as an oxidizing agent C\(_{(S)}\) + 2H\(_2\)SO\(_{4(aq)}\) -->2H\(_2\)O\(_{(l)}\) + 2SO\(_{2(g)}\) + CO\(_{2(s)}\) H\(_2\)SO\(_4\) as a dehydration agent H\(_2\)C\(_2\)O\(_{4(g)}\) + H\(_2\)SO\(_{4(l)}\) --> CO\(_{(g)}\) + CO\(_{2(g)}\) + (H\(_2\)O + H\(_2\)SO\(_{4(aq)}\)

(iii) It is commonly used in most industries.

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